US4438218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for sulphur removal from hydrocarbons
Assignee: Alberta Oil Sands Technology and Research Authority
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Filing: 1981-07-27
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Granted: 1984-03-20
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Expires: 2001-07-27
Abstract
Abstract A novel catalyst is provided which is effective in removing at least a portion of the sulphur contained in hydrocarbons, without the use of an external hydrogen source. The catalyst is a sulphided mixture, on a catalyst support, of (a) a sulphide of one or more of the transition metals iron, vanadium, molybdenum and copper, (b) a sulphide of either sodium or potassium, and (c) a hydroxide of either sodium or potassium. Sulphur removal with the catalyst is demonstrated with oil sand bitumen, heavy crude oil and asphaltenes.
Inventors
- 👤 Philip M. Boorman
- 👤 Tristram Chivers
- 👤 Donald F. Tavares
- 👤 Kalabeerappa N. Mahadev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:06
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06; C10G29/10; B; B01; B01J; B01J27/00; B01J27/02; B01J27/04; B01J27/043; B01J27/047; B01J27/051; C10G45/00; C10G45/02; C10G45/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
A process for producing a catalyst composition, comprising: slurrying together, in an aqueous solution, (a) a sulphide of a transition metal selected from the group consisting of iron, vanadium, molydenum, copper and mixtures thereof, (b) a sulphide of an alkali metal selected from the group consisting of sodium and potassium, and (c) a hydroxide of an alkali metal selected from the group consisting of sodium and potassium; impregnating the slurry onto a catalyst support; drying the slurry and support at an elevated temperature; sulphiding the dried mixtures; and heating the sulphided mixture to remove excess sulphide therefrom.
Claim 2
Dependent Claim
97 words
A process for producing a catalyst composition, comprising: slurrying together, in an aqueous solution, (a) a sulphide of a transition metal selected from the group consisting of iron, vanadium, molydenum, copper and mixtures thereof, (b) a sulphide of an alkali metal selected from the group consisting of sodium and potassium, and (c) a hydroxide of an alkali metal selected from the group consisting of sodium and potassium; impregnating the slurry onto a catalyst support; drying the slurry and support at an elevated temperature; sulphiding the dried mixtures; and heating the sulphided mixture to remove excess sulphide therefrom.
Claim 3
Dependent Claim
54 words
The process as set forth in claim 1, wherein: sufficient water is included in the slurrying step to dissolve at least a portion of the compounds (a), (b), and (c); and any water in excess of the amount which will dissolve the catalyst support is removed prior to impregnating the slurry onto the support.
Claim 4
Dependent Claim
58 words
The process as set forth in claim 2, wherein: the dried slurry-support mixture is sulphided by passing a stream selected from hydrogen sulphide and carbon disulphide over the mixture; and the excess sulphide is removed by heating the sulphided mixture at a temperature in the range of about 700° to 750° C. until no further sulphide is removed.
Claim 5
Dependent Claim
14 words
The process as set forth in claim 1, wherein: the catalyst support is alumina.
Claim 6
Dependent Claim
32 words
The process as set forth in claim 4, wherein: the transition metal sulphide is iron (II) sulphide; the alkali metal sulphide is sodium sulphide; and the alkali metal hydroxide is sodium hydroxide.
Claim 7
Dependent Claim
32 words
The process as set forth in claim 5, wherein: the transition metal sulphide is copper (I) sulphide; the alkali metal sulphide is sodium sulphide; and the alkali metal hydroxide is sodium hydroxide.
Claim 8
Dependent Claim
32 words
The process as set forth in claim 5 or 6, wherein: the molar ratio of the transition metal sulphide to the alkali metal sulphide to the alkali metal hydroxide is about 1:1:1.
Claim 9
Dependent Claim
30 words
The process as set forth in claim 6, wherein: the molar ratio of the transition metal sulphide to the alkali metal sulphide to the alkali metal hydroxide is about 1:1:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |